1 files changed, 21 insertions, 0 deletions

diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index 685b1b62a054..e319d1fffb82 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -20,6 +20,27 @@
 #include <linux/videodev2.h>
 #endif
 
+/* v4l debugging and diagnostics */
+
+/* Debug bitmask flags to be used on V4L2 */
+#define V4L2_DEBUG_IOCTL     0x01
+#define V4L2_DEBUG_IOCTL_ARG 0x02
+
+/* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
+#define v4l_print_ioctl(name, cmd)               \
+        do {                                     \
+                printk(KERN_DEBUG "%s: ", name); \
+                v4l_printk_ioctl(cmd);           \
+        } while (0)
+
+/* Use this macro in I2C drivers where 'client' is the struct i2c_client
+   pointer */
+#define v4l_i2c_print_ioctl(client, cmd)                   \
+        do {                                               \
+                v4l_client_printk(KERN_DEBUG, client, ""); \
+                v4l_printk_ioctl(cmd);                     \
+        } while (0)
+
 /*  Video standard functions  */
 extern const char *v4l2_norm_to_name(v4l2_std_id id);
 extern int v4l2_video_std_construct(struct v4l2_standard *vs,